Question

which of the following are empty sets .
1. x={x:x is a real no. neither rational nor irrational}
2.y={x:x is a real no. less than itself}
3.Z={x:x is a non-zero real satisfying x+a=0 for every real a}
4.T={x:x a=a for every real a}
5. w={x:x is a point common two skew lines}​

Answer 1

Answer: the fifth one is the answer of your question . the { w} ones Step-by-step explanation: is i have to define it also or not tell me by comments Hope this helps you thank you have a great day ☺️ the fifth one is the empty set i forget to write this